City size comparison

compared to

Istanbul is about 9 times bigger than Seoul.

Seoul is approximately 605 sq km, while Istanbul is approximately 5,343 sq km, making Istanbul 783% larger than Seoul.
Tip: This to-scale comparison of Seoul vs. Istanbul uses the Mercator projection, which distorts the size of regions near the poles.
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Compare further: Istanbul vs. Seoul

Flip Comparison · See true size
See Istanbul on top of Seoul
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Cost of Living Comparison · 7 categories - 2026 data
Seoul is 18.4% more expensive than Istanbul
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